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MSP430F5438A 头文件说明和用户指导手册不匹配,我该相信谁?

Other Parts Discussed in Thread: MSP430F5438A

《MSP430x5xx and MSP430x6xx Family User's Guide》(SLAU208Q–June 2008–Revised March 2018)中包含UCAxMCTLW寄存器。

<msp430f5438a.h> v1.4 (IAR for MSP430 7.12.1中系统自带头文件)中包含UCAxMCTL寄存器。

一个是字宽度,一个字节宽度。

我使用的芯片型号是MSP430F5438A REV F。

请问各位,这个我该相信谁?目前我是以头文件的为准,但是调试串口115200bps出现问题。